Toyota Sienna Quiz
2GR-FE Engine control system

Air Intake Control Circuit

In this manual: 2GR-FE Engine control system
Introduction — 55Service specifications — 7Maintenance — 7Engine — 264U151e automatic transaxle — 108Transfer — 19Propeller shaft — 8Drive shaft — 14Differential — 16Axle — 18Suspension — 37Tire and wheel — 54Brake control — 141Parking brake — 16Steering Column — 11Power steering — 18Air conditioning — 106Supplemental restraint system — 146Seat belt — 22Theft deterrent — 14Engine immobiliser — 17Cruise control — 65Lighting — 61Wiper and washer — 13Door lock — 42Meter — 28Audio / visual — 94Navigation — 108Park assist / monitoring — 33Horn — 5Garage door opener — 42GR-FE Engine control system — 126Supplemental restraint system — 147Other system — 14Windshield / windowglass — 43Mirror — 23Instrument panel — 6Seat belt — 22Seat — 92Engine hood / door — 104Exterior — 39Interior — 5Sliding roof — 9Multiplex communication — 18Can communication — 23
15steps
~90min
4/5difficulty
Done 0 of 15

DESCRIPTION

The air cleaner is equipped with two inlets, one of which is opened or closed by the Air Intake Control Valve (AICV). This system reduces intake noise and increases engine power at low-to-high engine speed range.

When the engine is operating in the low-to-mid speed range, this control operates the AICV to close one of the air cleaner inlets. When the engine speed is more than 3600 rpm and the opening angle of the throttle valve is more than 60, the ECM activates the VSV and opens the AICV.

DESCRIPTION

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (VSV FOR AICV)

PERFORM ACTIVE TEST BY INTELLIGENT TESTER
  1. Turn the ignition switch to the ON position and turn the intelligent tester on.
  2. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1 and operate the VSV for AICV.
  3. Check the operation of the VSV when the VSV is operated by the intelligent tester.

Standard

Standard

2 CHECK VSV (FOR AICV)

  1. Inspect the intake air control valve assembly

3 CHECK HARNESS AND CONNECTOR (VSV FOR AICV - ECM)

CHECK HARNESS AND CONNECTOR
  1. Check the wire harness between the VSV for AICV connector and the ECM connector.
  2. Disconnect the V2 VSV for AICV connector.
  3. Disconnect the E9 ECM connector.
  4. Measure the resistance according to the value(s) in the table below.

Standard resistance: Check for open

Standard resistance

Check for short

Standard resistance
  1. Reconnect the ECM connector

4 INSPECT FUSE (EFI NO. 2 FUSE)

INSPECT FUSE
  1. Check the EFI No. 2 fuse.
  2. Remove the EFI No. 2 fuse from the engine room junction block.
  3. Measure the EFI No. 2 fuse resistance.
Standard resistance: Below 1 Ω
  • Reinstall the EFI No. 2 fuse.

    • 5 CHECK HARNESS AND CONNECTOR (VSV FOR AICV - EFI RELAY)

    CHECK HARNESS AND CONNECTOR
    1. Check the wire harness between the VSV for AICV and the EFI relay.
    2. Remove the EFI relay from the engine room junction block.
    3. Measure the resistance according to the value(s) in the table below.

    Standard resistance : Check for open

    Standard resistance
    1. Reconnect the VSV for AICV connector.
    2. Reinstall the EFI relay.

    6 INSPECT VACUUM TANK

    1. Inspect the vacuum tank

    CHECK ECM POWER SOURCE CIRCUIT

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